Programme National de Planétologie

Détails

23 mai 2023

 Les nouvelles 22 mai 2023: 

1) Décès de Franck Shu

2) Ecole biennale du PNP : Small bodies of the Solar System and their link with extraterrestrial samples | 4-9 Février 2024 | Les Houches, France 

3) CNES - Appel à contributions pour Séminaire de prospective scientifique

4) 14th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas (ASOS) | July 10-13, 2023 | Paris

5) Workshop on the Origins and Habitability of the Galilean Moons | 24-26 Octobre 2023 | Aix-en-Provence 

6) Workshop Science with Habitable Worlds Observatory and Beyond | July 10-15, 2023 | STScI Baltimore & On line

7) 39èmes Journées françaises de Spectroscopie de Masse | 5-8 septembre 2023 | Marseille

8) 4 postdoctoral positions on exoplanets | Université de Genève

9) PhD position on Exoplanets | Université de la Côte d'Azur

10) Post-doctoral fellowship on 3D radiative transfer modeling on Mars | LATMOS, Guyancourt

11) Associate Professor in Planetary Exploration | TU Delft

12) Thèse, HDR, séminaires
    a) Séminaire | Nicolas Levraud (LAM): Measuring the ELT petal mode in presence of AO residual turbulence with pyramid wavefront sensor | Jeudi 25 Mai, 16h00
    b) Séminaire | Carles Cantero (Liège) NA-SODINN: a deep learning algorithm for exoplanet image detection based on residual noise regimes | Jeudi 1er juin, 16h00

    c) Astrogeo Seminar | David de Vleeschouwer § WMU Münster: Pre-Cenozoic paleoclimate responses to astronomical forcingPre-Cenozoic paleoclimate responses to astronomical forcing | Jeudi 1er juin, 15h00

    d) Webinaire de la SFE - « La mission spatiale Juice est-elle une mission d’exobiologie ? » par John Carter, le 15 Juin 2023 à 17h.

Bien cordialement,

                Thierry

La liste de diffusion du PNP a pour vocation la communication auprès de tous les chercheurs en planétologie et exoplanétologie en France. 

Pour s’inscrire ou se désinscrire, c’est ici : https://listes.services.cnrs.fr/wws/info/pnp_news.

N’hésitez pas à faire suivre cette information auprès des chercheurs/doctorantes/post-doctorants de votre laboratoire.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

1) Décès de Franck Shu

    Nous avons le regret de vous annoncer le décès de Frank Shu le 22 avril 2023, à l'âge de 79 ans, chez lui à Atherton (Californie). Né à Kunming, en Chine, en 1943, Frank a émigré aux États-Unis avec sa famille à l'âge de 5 ans. Il a obtenu son doctorat à Harvard en 1968 et a effectué la plus grande partie de sa carrière scientifique à l'université de Berkeley. Les contributions de Frank Shu à l’astrophysique théorique sont extrêmement nombreuses ; elles feront date tout comme ses livres : The Physical Universe et Physics of Astrophysics. Au mitan des années 90, ses travaux sur la formation des chondrites ont bouleversé les études des météorites ; ils ont grandement influencé les cosmochimistes du monde entier et en particulier l’école française qui, suivant son exemple, a inlassablement cherché à nouer un dialogue fécond entre astrophysiciens et spécialistes des météorites.

    http://memorial.asiaa.sinica.edu.tw/frankshu/msg4news.html

    Matthieu Gounelle, Marc Chaussidon, Alessandro Morbidelli

 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

2) Ecole biennale du PNP : Small bodies of the Solar System and their link with extraterrestrial samples | 4-9 Février 2024 | Les Houches, France 

https://leshouches2024.sciencesconf.org/

Le PNP est heureux de vous annoncer sa prochaine école thématique à l'École des Houches sur Small bodies of the Solar System and their link with extraterrestrial samples. Venez nombreux.

Objectives

This Winter School aims to better understand the bridge between solar system small bodies and extraterrestrial samples. Lectures will focus on solar system and small bodies formation and evolution, cosmochemistry, timescales, sample return analysis, and perspectives for this research field. Lectures and discussions will be held in English.

Please have a look at the Program section for more details.

The school is opened to permanent staffs, postdocs, and PhD students.

Date and location

4th to 9th of February 2024

Ecole de Physique des Houches, France

https://www.houches-school-physics.com

Registration (starting 17th April 2023)

Please register in the Registration section. The number of participants is limited to 70 persons. We aim for about 40 permanent staffs (including 25 speakers and SOC members) and 30 postdocs and/or PhD students. If the number of participants exceeds the capacity, we will select the participants to have a proper thematic, geographic, and gender balance.

Participants are expected to attend the full week (5 days); partial attendance is not recommended.

School fees

The price amounts to 540 € (VAT included) per person for the full week. It includes full board (excluding drinks) from Sunday dinner to Friday lunch, and coffee breaks.

The registation will have to be paid via the website AzurColloque, once the participants list is defined (details will come later).

We are currently looking for fundings to support the participations of some PhD students and postdocs.

Sponsors
 
CNRS / INSU : Programme National de Planétologie (PNP)
CNES : Centre National d'Etudes Spatiales  

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

3) CNES - Appel à contributions pour Séminaire de prospective scientifique

Bonjour,

Nous avons le plaisir de vous annoncer l’ouverture de l’appel à contributions du CNES dans le cadre des travaux de préparation du prochain séminaire de prospective scientifique du CNES, qui se tiendra du 8 au 10 octobre 2024 à Saint-Malo.

Les équipes de recherche des laboratoires sont invitées à soumettre leurs propositions jusqu’au 15 septembre 2023 minuit sur la plateforme dédiée :

https://appels-sciences.cnes.fr/fr

Vous  retrouverez sur cette plateforme (appel à contributions SPS 2024) le texte de l’appel à contributions, ainsi que les modalités pour répondre à cet appel. Nous attirons votre attention sur l’importance de lire ces modalités pour prendre en compte les recommandations de soumission de vos propositions.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

4) 14th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas (ASOS) | July 10-13, 2023 | Paris

The 14th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas (ASOS) will be held in Paris, from July 10 to 13, 2023, starting with a welcome reception on Sunday July 9th evening. It will be located on the campus « Les Cordeliers » of the Sorbonne University, 15, rue de l'Ecole de médecine, 5th district of Paris, in the heart of the Latin Quarter. A conference dinner is being organised for Wednesday 12th evening. The conference will end at midday on Thursday 13th, 2023. Information will be posted as become available on https://asos2023paris.sciencesconf.org.

The registration for the 14th ASOS is open from now to June 25th 2023, through the website  https://asos2023paris.sciencesconf.org.

The aim of the ASOS series of conferences is to bring together scientists from atomic physics, plasma physics and astrophysics and to bring together the “producers” of fundamental atomic data and the “users” of these data. During the conference, atomic physicists present the development of their theoretical and experimental methods, as well as the possibility of obtaining increasingly complete and precise data on the structures, the radiative and collisional properties of atomic systems. Astrophysicists and plasma physicists review the context of their research and their needs for atomic data for modelling the plasmas studied, such as stellar or solar plasmas, fusion plasmas or other laboratory plasmas.

Topics (from previous conferences) : 

• Need for atomic data from space and ground observations (solar and stellar plasmas, interstellar media, active nuclei of galaxies, quasars, kilonovae)
• Need for atomic data from laboratory experiments (diagnostics of fusion plasmas, plasmas produced by laser)
• Determination of lifetimes and oscillator strengths
• Hyperfine structures, isotopic shifts
• Theoretical modelling and numerical approaches
• Laboratory techniques
• Ion storage
• High resolution spectroscopy
• Variation of fundamental constants
• Collisional processes
• High energy density plasma spectra, opacities
• Spectral line profiles (broadening, shifts, nuclear effects, magnetic field effects, polarisation)
• Atomic databases and connected subjects

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

5) Workshop on the Origins and Habitability of the Galilean Moons | 24-26 Octobre 2023 | Aix-en-Provence 

Dear Colleagues,

We have the pleasure to inform the planetary science community that the abstract submission is now open for the upcoming Workshop on the Origins and Habitability of the Galilean Moons to be held in Aix-en-Provence in October 24-26, 2023. Deadline for submissions is June 25th, 2023.

Details are found here: https://galileanmoons.com

Best wishes,

Olivier Mousis, Kathleen Mandt, & Morgan Cable 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

6) Workshop Science with Habitable Worlds Observatory and Beyond | July 10-15, 2023 | STScI Baltimore & On line

Please join us this summer for “Science with the Habitable Worlds Observatory and Beyond”, a workshop dedicated to building out the science case for HabWorlds and exploring its complementarity with other future missions and facilities. In addition to an exciting science program, we will have activities designed for early-career researchers, “how-to” sessions for getting involved and doing performance calculations for your own science, and other engaging material. 

Invited Talks: We have an exciting slate of invited speakers on the science possibilities of, the technology for, and pathway to the HabWorlds mission. See below for a list of currently confirmed speakers on science, technology, and development path topics. 

Abstract Submission: We welcome abstracts for proposed contributed talks and for posters. To submit an abstract, please visit https://stsci.service-now.com/habw/
We will notify contributed speakers by mid-June. We welcome abstracts on all areas of science & technology related to HabWorlds and its complementary observatories (the X-ray and FIR New Great Observatories, ground-based facilities, etc.). Posters will be shown on video monitors in the STScI cafe, and are not limited in number. 

Hybrid Format: We can accommodate up to 180 participants in the STScI Bahcall Auditorium, and many more online. We will make use of state-of-the-art AV tools to make online participation effective. We do charge online participants a nominal registration fee to offset the costs of the virtual platform.  

Activities for Early Career Researchers: Astro2020 recognized that the New Great Observatories will be a multi-decadal, multi-generational endeavor. With a view towards equipping the rising generations of astronomers and technologists with the tools they need to lead, we have planned activities specifically designed to connect ECRs with mid- and senior-career attendees working on all aspects of the science, planning, technology, and policy during the week. We will supply additional details to all who self-identify as an ECR (student or postdoc) when registering. 

Travel Support: It is our goal to broaden participation in the conference as much as possible. If a lack of resources prevents your joining us, please let us know by reaching out to the conference email address and we will work with you to identify support. 

Tech Day Friday the 14th: The main meeting agenda spans Monday - Thursday July 10-13. To facilitate in-depth discussions of the technology challenges, we welcome all interested participants to stay for a day-long tech-focused agenda on Friday. Please let us know if you intend to join Tech Day when you register, and we will compose a detailed program based on who plans to attend. If you do not intend to join Tech Day, the meeting ends for you with the celebration at NAS on Thursday evening, and you can make travel plans accordingly. 

JWST and Beyond at the National Academies: Our meeting coincides with the first complete year of JWST science. To celebrate this milestone and explore how JWST science sets the community up to prepare HabWorlds, we will host a reception and evening program at the National Academies Great Hall on the evening of July 13. This event is open and free to all conference registrants, and transportation will be provided. Please note that as of this writing, NAS requires proof of COVID-19 vaccination (initial dose(s) + one booster) to enter their facility. Please plan accordingly. We will update attendees on this situation if anything changes. 

For further details

visit these resources:
 
website: https://www.stsci.edu/contents/events/stsci/2023/july/science-with-the-habitable-worlds-observatory-and-beyond
registration form: https://na.eventscloud.com/habitableworlds
to email the organizers, use the “Please contact STScI” link at the main conference page linked above.

We look forward to seeing you here in July!

 

On behalf of the SOC, 
Jason Tumlinson (STScI/JHU, chair, Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.)
Giada Arney (GSFC) 
Vanessa Bailey (JPL)  
Richard Cartwright (SETI) 
Jessie Christensen (IPAC) 
Megan Donahue (MSU) 
Chris Evans (STScI/ESA) 
Rob Kennicutt (Arizona/Texas A&M)  
Bruce Macintosh (UC Observatories) 
Meredith MacGregor (Colorado) 
Steve McCandliss (JHU) 
Neill Reid (STScI)

Confirmed Invited Science Talks (partial list):
Jean-Claude Bouret (LAM) 
John Chisholm (U. of Texas) 
Rebekah Dawson (Penn State) 
Courtney Dressing (UC Berkeley) 
Scott Gaudi (Ohio State) 
Matthew Hayes (Stockholm) 
Natalie Hinkel (SWRI) 
Rebecca Larson (U. Texas) 
Michael McDonald (MIT) 
Vikki Meadows (U. Washington) 
Ruth Murray-Clay (UC Santa Cruz) 
Claudia Scarlata (U. Minnesota) 
Evgenya Shkolnik (ASU) 
David Sing (JHU) 
Rachel Somerville (Flatiron/CCA) 
Thaisa Storchi Bergmann (UFRGS Brasil) 
Geronimo Villanueva (NASA GSFC) 
Kate Whitaker (UConn) 
Ben Williams (U. Washington) 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

7) 39èmes Journées françaises de Spectroscopie de Masse | 5-8 septembre 2023 | MarseilleChères et Chers Collègues,

La SFSM a le plaisir de vous annoncer que la 39ème édition de son congrès annuel sera organisée du 5 au 8 septembre 2023 à Marseille, au Palais du Pharo.

La deadline pour la soumission d’une demande de communication orale est fixée au 28 mai 2023. Les inscriptions early bird seront clôturées le 31 juillet 2023.

Vous trouverez les détails du programme scientifique et social à l’adresse web : https://jfsm2023.sciencesconf.org/

Par ailleurs, plusieurs nouveautés sont à vous signaler :
 

• Cette année, la SFSM vous propose une formation inédite, consacrée à la rédaction des publications scientifiques. Programmée le mardi 5 septembre de 9h00 à 11h30 et ouverte à 25 personnes, cet atelier sera présenté par le Dr Jonathan Faiz, éditeur en chef du journal ChemPlusChem (Wiley). L’inscription est gratuite, mais obligatoire à Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser..
• De plus, les participants qui souhaitent avoir un avis critique sur leur publication en cours de rédaction, peuvent envoyer leurs drafts par voie électronique directement au Dr Faiz à l’adresse :  Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. avec en sujet : « Atelier JFSM ». Les auteurs des premiers 5 drafts reçus (avant 31 juillet) bénéficieront d’un RDV en tête-à-tête avec le Dr Faiz, pour une discussion et un retour personnalisé.  

Pour plus de détails :https://jfsm2023.sciencesconf.org/resource/page/id/5

En collaboration avec Wiley, nous allons constituer une collection dédiée à la conférence. Vous recevrez prochainement les détails concernant cette action.

Les inscriptions au congrès s’effectuent en deux étapes : étape 1 : préinscription puis, après validation, étape 2 : inscription + paiement) sur la plateforme CNRS AzurColloque. Notez que les bons de commande doivent impérativement être libellés CNRS/CINAM.

Par ailleurs, nous vous signalons que septembre reste un mois chargé pour la ville de Marseille et nous vous conseillons donc de réserver votre logement dès que possible.  

Heureuse de vous accueillir à Marseille,

Aura Tintaru, pour le Comité d'organisation JFSM2023

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

8) 4 postdoctoral positions on exoplanets | Université de Genève

The exoplanet team of the University of Geneva has an opening for 4 postdoctoral researchers to work on a range of topics related to exoplanet detection, characterization and theoretical modelling. These topics are:

1. The detection and characterization of exoplanet systems through high-precision radial velocity measurements (2 positions) contacts for information: Prof. François Bouchy (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.), Prof. Christophe Lovis (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.) and Prof. Xavier Dumusque[1] (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.).
2. The detection and characterization of brown dwarfs and exoplanets using high-contrast imaging (1 position) contact for information: Prof. Damien Ségransan (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.).
3. The interpretation of spectra of exoplanetary atmospheres obtained at high-spectral resolution (1 position) contact for information: Prof. David Ehrenreich (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.)

Using the high-resolution spectrographs CORALIE, HARPS, HARPS-N, ESPRESSO, and NIRPS, our team is strongly involved in blind radial velocity (RV) surveys as well as in the follow-up of transiting candidates from NGTS, K2 and TESS photometric surveys. We further exploit these instruments to characterize the atmospheres of transiting exoplanets, allowing us to resolve chemical species across the surface of exoplanets. In addition, based on our experience with Gaia astrometry and using the historical CORALIE and HARPS radial velocity surveys, we are probing – with the high contrast imager SPHERE – substellar objects at the divide of brown dwarfs and massive giant planets to study the physics of ultra-cool atmospheres and bring constraints on planet formation and evolution theories. The selected applicants are expected to work on (i) the optimization of the data-reduction, calibration and RV-extraction from both visible and near-infrared high-resolution spectrographs; the mitigation of stellar activity using data driven and machine learning techniques; the combination of RV data with photometric, astrometric and direct imaging measurements, including dynamical developments for the characterization of multi-planetary systems; (ii) the development of advanced high contrast imaging algorithm in the context of current SPHERE observations and in preparation of the SAXO+ project; (iii) the development and/or  adaptation of forward 3D atmospheric models or retrieval techniques to exploit transit transmission spectra obtained with ESPRESSO in the optical and NIRPS in the near-infrared.

The successful candidates will be strongly involved in the science exploitation of large programs and guaranteed observing time of the aforementioned spectrographs and in the development of specific tools for the Data and Analysis Center for Exoplanets (DACE - https://dace.unige.ch) for validation and combined analysis of exoplanets.

The Department of Astronomy of the University of Geneva offers a modern and vibrant work environment, with a wide range of activities including theory, numerical simulations, observations and instrumental developments in the domains of exoplanets, stellar physics, galactic dynamics, observational cosmology and high-energy astrophysics. Our exoplanet team is well-renowned and has strong involvement in exoplanets detection, the determination of the planet physical properties, the characterization of planet atmospheres, and the development of an associated world-class instrumentation. We are also co-leading the Swiss-wide National Centre of Competence in Research (NCCR) PlanetS (http://nccr-planets.ch), dedicated to the study of the origin, evolution, and characterization of planets inside and outside our Solar System, providing thus the applicants with opportunities to develop collaborations with members of PlanetS.

The duration of the postdoc contracts is for 2 years, with possible extension to a third year depending on available funds. Candidates should have less than 3 years after their PhD at start of the employment. The positions are funded by Swiss National Science Foundation with a gross salary around 80,000 CHF and are open for immediate start.

For more information about the respective opportunities, interested candidates should directly contact Prof. D. Ehrenreich, Prof. D. Ségransan, Prof. C. Lovis, Prof. X. Dumusque or Prof. F. Bouchy according to their topic(s) of interest, as listed above.

Applications (concatenated in a singe pdf file) must contain:

• A curriculum vitae;
• A publication list;
• A cover letter including a short (1 to 2 pages max) research statement describing past achievements and future projects, as well as interest in the chosen topic;
• Names, positions and e-mail addresses of up to three persons of reference that could be contacted.

Applications shall be sent before 15 June 2023 to Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser..

The University of Geneva is an equal opportunity employer committed to diversity in its workplace.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

9) PhD position on Exoplanets | Université de la Côte d'Azur

https://adum.fr/as/ed/voirproposition.pl?site=adumR&matricule_prop=49885#version

Methane is the main carbon-bearer molecule in our solar-system giant planet atmospheres. It has been used to measure the metallicity of these planets, allowing to deepen our understanding of their formation processes. On exoplanets methane is expected to become the dominant carbon-bearer molecule for planets cooler than approximately 1200K. However, it remains elusive. None of the dozen warm exoplanet observed by the Hubble Space Telescope show definitive evidence of methane, despite methane having a very strong absorption band in the WFC3 instrument.

The James Webb Space Telescope began observations off exoplanet atmospheres this summer and is providing spectra of a much better precision than HST and covering a much wider wavelength range. The first planets observed by JWST through the Early Release Science program showed a definitive lack of methane. Other observations from GTO and GO programs all confirm this trend: lower than expected methane abundances are observed in other planets.

Predicting the methane abundance in these planet is a complex problem. These warm, tidally locked planets are not expected to be in thermochemical equilibrium and atmospheric circulation is expected to play a strong role shaping the chemical abundances at the photosphere. Strong vertical mixing can bring methane-rich air from the deep layers of the planet. Once the air reaches the lower pressure levels, methane is expected to photodissociate thanks to the strong UV radiation of the host star. The radicals formed should then combine and form a thick photochemical haze layer that can shield the methane below from being more dissociated. The haze particles should then grow and settle down, bringing back the carbon atoms to the deep, hot atmospheric layers where they can evaporate and form gaseous methane again. The chemical abundances resulting from this methane cycle will be determined by a competition between the vertical mixing needing to bring new gaseous methane upward and the particle settling, leading to a downwelling flux of carbon atoms. The deep atmospheric temperature profile and the atmospheric metallicity, two quantities that we would like to ultimately measure, will both play a fundamental role in setting the background gaseous abundances and the main chemical reaction paths that are available to the chemistry.

The goal of this PhD project is to model the methane cycle on warm exoplanets in order to quantify the expected methane abundance in warm exoplanets and link the observed methane abundances to specific planet parameters, such as metallicity, deep temperature or strength of the vertical mixing. The student will use the 3D, non-grey, atmospheric circulation model SPARC/MITgcm that has already been used to model a diversity of planets, ranging from metal-rich sub-Neptunes (Kataria et al. 2014) to ultra-hot Jupiters (Parmentier et al. 2021) and allows the calculation of spectra that can be directly compared to the observations. The student will combine this model with a chemical network such as the VULCAN model to follow the methane as it is advected and react chemically.

At the same time, the student will work closely with the JWST guaranteed time observation team led by Tom Greene (Program: GTO 1185 https://sites.google.com/view/jwstmanatee/) and in which Vivien Parmentier is an active collaborator to compare his modelling predictions to the observations of 6 different warm Neptunes that will be observed in the coming two years.”   

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
10) Post-doctoral fellowship on 3D radiative transfer modeling on Mars | LATMOS, Guyancourt

Based on an existing radiative transfer model (SHDOM), the candidate will develop a model to simulate the near-infrared radiative environment in which the Perseverance rover is evolving in the context of the Mars 2020 mission. This model will help to better understand the influence of the Martian atmosphere (its gaseous and particular, dust/ice, composition) on the visible and infrared spectra of rocks observed by the SuperCam instrument in which LATMOS is involved.

The candidate will work in the Planetology department of LATMOS, more particularly in a team interested in the composition of the atmospheres of Mars and Venus and very involved in the current space missions (Mars 2020, ExoMars Trace Gas Orbiter, Mars Express, etc).

The candidate will be expected to take several algorithms (radiative transfer, spectroscopic database of rocks and gases; Jezero crater terrain model) and assemble them to develop a complete direct model to most accurately reproduce how solar photons are affected by the atmospheric component depending on where the rover is and what target it is viewing.
The following skills are appreciated:

• Programming in Fortran, IDL, Python or other
• Knowledge in optics
• Basic knowledge of atmospheric physics appreciated, but not imperative.

This contract is funded by CNRS for 15 months (depending on experience).
This position is also suitable for a candidate more interested in the engineering aspects of a research project.

To apply, visit: https://emploi.cnrs.fr/Gestion/Offre/Default.aspx?Ref=UMR8190-FRAMON-006
and/or contact:    Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

11) Associate Professor in Planetary Exploration | TU Delft

Job description

The Department of Space Engineering (SpE) has a vacancy for a permanent staff member in planetary sciences and exploration, preferably at the associate professor level.

The proposed position is in the Section of Planetary Exploration (PE). The successful candidate will be involved in further development of SpE research on planetary sciences in connection to spaceborne instrumentation and interplanetary missions. Research within the PE Section is focused on the outer planets and their moons (JUICE, Europa-Clipper, new mission concepts), interiors and surfaces of natural satellites and small planetary bodies, rocky planets (especially Mars), planetary surface processes, planet formation and evolution, and exoplanetary systems. The PE Section has staff members who are specialized in the earth sciences, in astronomy and in the planetary sciences.

Requirements

We are especially looking for candidates who have a strong research record in planetary sciences and exploration, have already shown the capacity to acquire substantial amounts of external funding, are inspiring teachers and team workers, and who can easily connect to and collaborate with the other three SpE sections on Space Systems Engineering, Spaceborne Instrumentation and Astrodynamics & Space Missions.

The SpE department has facilities for building space-based miniprobes and laboratories for instrument development (mainly optical) and planetary ices including a bio-lab (DPLabs), as well as computational facilities.

TU Delft is within close range of ESTEC Noordwijk, Airbus Leiden, Leiden Observatory, SRON and TNO Space. 

Conditions of employment

Salary and benefits are in accordance with the Collective Labour Agreement for Dutch Universities (based on scale 13: € 5.506,00 - € 6.702,00). A permanent contract is being offered. The TU Delft offers a customisable compensation package, a discount on health insurance and sport memberships, and a monthly work costs contribution. Flexible work schedules can be arranged.

Inspiring, excellent education is our central aim. We expect you to obtain a University Teaching Qualification (UTQ) within three years if you have less than five years of teaching experience. This is provided by the TU Delft UTQ programme.

TU Delft sets high standards for the English competency of the teaching staff. The TU Delft offers training to improve English competency. If you do not speak Dutch, we offer courses to learn the Dutch language.

For international applicants, TU Delft has the Coming to Delft Service. This service addresses the needs of new international employees and those of their partners and families. The Coming to Delft Service offers personalised assistance during the preparation of the relocation, finding housing and schools for children (if applicable). In addition, a Dual Career Programme for partners is offered. The Coming to Delft Service will do their best to help you settle in the Netherlands.

TU Delft (Delft University of Technology)

Delft University of Technology is built on strong foundations. As creators of the world-famous Dutch waterworks and pioneers in biotech, TU Delft is a top international university combining science, engineering and design. It delivers world class results in education, research and innovation to address challenges in the areas of energy, climate, mobility, health and digital society. For generations, our engineers have proven to be entrepreneurial problem-solvers, both in business and in a social context.

At TU Delft we embrace diversity as one of our core values and we actively engage to be a university where you feel at home and can flourish. We value different perspectives and qualities. We believe this makes our work more innovative, the TU Delft community more vibrant and the world more just. Together, we imagine, invent and create solutions using technology to have a positive impact on a global scale. That is why we invite you to apply. Your application will receive fair consideration.

Challenge. Change. Impact!

Faculty Aerospace Engineering

The Faculty of Aerospace Engineering at Delft University of Technology is one of the world’s most highly ranked (and most comprehensive) research, education and innovation communities devoted entirely to aerospace engineering. More than 200 science staff, around 270 PhD candidates and close to 3000 BSc and MSc students apply aerospace engineering disciplines to address the global societal challenges that threaten us today, climate change without doubt being the most important. Our focal subjects: sustainable aerospace, big data and artificial intelligence, bio-inspired engineering and smart instruments and systems. Working at the faculty means working together. With partners in other faculties, knowledge institutes, governments and industry, both aerospace and non-aerospace. Working in field labs and innovation hubs on our university campus and beyond. 

Click  here  to go to the website of the Faculty of Aerospace Engineering.

Additional information

For more information on the Planetary Exploration section, visit TU Delft Planetary Exploration or contact the section head Prof. Dr. Bert Vermeersen (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.). 

https://www.tudelft.nl/over-tu-delft/werken-bij-tu-delft/vacatures/details?jobId=12173

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

12) Thèse, HDR, séminaires
 

a) Séminaire | Nicolas Levraud (LAM): Measuring the ELT petal mode in presence of AO residual turbulence with pyramid wavefront sensor | Jeudi 25 Mai, 16h00

https://us02web.zoom.us/j/85481169824

The next generation of Extremely Large Telescope (24 to 39m diameter) will suffer from the so-called "pupil fragmentation" problem. Due to their large spiders, differential pistons will appear in the wavefront between the part of the pupil separated by these spiders during observations.

The Adaptive Optics (AO) system necessary to compensate atmospheric turbulence appears unable to sense this differential piston leading to bad control by the loop. Hence, such differential pistons, a.k.a petal modes, will prevent the AO system from reaching the diffraction limit of the telescope and ultimately will represent the main limitation of AO-assisted observation with an ELT. All the future single conjugated AO systems for the ELT have a PyWFS that is sensible to differential piston unlike the Shack-Hartmann, but it is not trivial to get a good enough sensitivity. This is particularly true for high contrast observing modes. These differential pistons can evolve quickly, so we are looking for an AO loop scheme able to measure both the atmospheric turbulence and the petal modes.

Solutions have been proposed such as the Holographic Dispersed Fringe Sensor (HDFS) for the Giant Magellan Telescope but they are not fast enough to be implemented as WFS of the AO loop and require longer AO sensing wavelength.

In this talk we want to study how to make the Pyramid Wavefront Sensor (PyWFS) sensitive to petal mode with visible light. We show that a small modulation radius makes the PyWFS sensitive to petal but unable to measure atmospheric turbulence due to the PyWFS non-linearities. We therefore propose to add dedicated petal sensor as a 2nd path and we study the unmodulated PyWFS as a candidate for this role. We study the reconstruction of the petal mode present in the residuals by this petalometer. We show that the petal mode due to its spatial frequency distribution beeing infinite can be confused with other high spatial frequency modes present in the residual turbulence. We propose a focal plane spatial filter to reduce high frequency residuals. The spatial filter helps in reducing this confusion, improving the petal measurement. In this talk we perform E2E simulations to demonstrate the validity and performance of this new concept.

 b) Séminaire | Carles Cantero (Liège):  NA-SODINN - a deep learning algorithm for exoplanet image detection based on residual noise regimes | Jeudi 1er juin, 16h00
 

https://us02web.zoom.us/j/84331435419

As of today, there exists a plethora of post-processing algorithms for exoplanet imaging. Their performance has been assessed using different data sets and metrics, which caused confusion in the HCI community when comparing their detection ability. In order to homogenize the comparison of these algorithms, the Exoplanet Imaging Data Challenge (EIDC) was born. With twenty eight algorithm submissions, the first EIDC phase (exclusively dedicated to exoplanet detection) provided two interesting conclusions: (1) detection algorithms that exploit the local behavior of image noise obtained the highest detection score; (2) supervised machine learning algorithms, such as the SODINN deep neural network developed at ULiège,  produced a relatively high number of false positives. With the aim of improving the robustness of SODINN against false alarms, we built a more advanced version, referred to as Noise-Adaptive SODINN, which relies on two new strategies that help the training to capture stronger local image noise correlations. First, unlike its predecessor, NA-SODINN trains an independent classification model per image noise regime in the processed frame. Second, its network is fed with S/N curves, local discriminators that contain additional physical-motivated features and help the trained model to better disentangle an exoplanet signature from speckle noise. NA-SODINN is evaluated against SODINN through a Receiver Operating Characteristics (ROC) analysis, in which we observe a clear improvement in both sensitivity and specificity. Then, it is submitted to EIDC, where we observe that it is ranked at the top (first or second position) of the challenge leaderboard for all considered evaluation metrics.

c) Astrogeo Seminar | David de Vleeschouwer § WMU Münster: Pre-Cenozoic paleoclimate responses to astronomical forcingPre-Cenozoic paleoclimate responses to astronomical forcing | Jeudi 1er juin, 15h00

The zoom link is   https://us02web.zoom.us/j/86500402414

Astronomical insola-on forcing is now well-established as the underlying metronome of Quaternary ice ages and Cenozoic climate carbon-cycle feedback mechanisms. However, its effects on earlier Eras (Mesozoic, Paleozoic, and pre-Cambrian) are less understood. During this seminar, I will evaluate various pre-Cenozoic modes of response to astronomical forcing, and provide an overview of the Earth System components that were par-cularly sensi-ve to astronomical forcing under evolving boundary condi-ons. Subsequently, the role of astronomical forcing in pacing the global carbon cycle in the Devonian warmhouse and Cretaceous hothouse worlds is discussed. Both periods are characterised by recurrent ocean anoxia and remarkably similar hypotheses exist regarding how astronomical forcing could have amplified a nutrient surplus (from chemical weathering and volcanism, respec-vely) to tip the ocean system into anoxia. The Triassic-Jurassic boundary cyclostratigraphy illustrates the importance of precession-scale time-control to understand feedback mechanisms and cause-and-effect chains at a resolution that is relevant for making analogies with the present- day. Finally, I will provide an outlook on the need for a coordinated approach, using so-called astrochronozones, to establish a fully astronomically-calibrated -mescale for the Phanerozoic. Overall, the aim of the seminar is to highlight the need for a more comprehensive understanding of the role of astronomical insola-on forcing in shaping Earth's climate over geologic time. After all, such comprehensive understanding constitutes a crucial pre-requisite before one can use the geological record to reconstruct solar system fundamental frequencies and Earth-Moon dynamics.

d) Webinaire de la SFE - « La mission spatiale Juice est-elle une mission d’exobiologie ? » par John Carter, le 15 Juin 2023 à 17h.

Le prochain webinaire de la SFE aura lieu le 15 Juin 2023 à 17h. Il aura pour thème « La mission spatiale Juice est-elle une mission d’exobiologie ? » et sera donné par John Carter, astronome adjoint à l'IAS et au LAM.

Titre : La mission spatiale Juice est-elle une mission d’exobiologie ? 

Résumé :
JUICE est une mission majeure de l'ESA qui va explorer de façon complète Jupiter, ses anneaux et ses lunes dans les années 2030. Le système jovien peut être considéré comme un système solaire miniature, les 4 lunes galiléennes présentant une richesse géologique et une diversité qui n'ont rien à envier aux planètes telluriques. L'objectif de JUICE est d'apporter des éléments de réponse à de grandes questions propres à Jupiter, mais également de plus grande portée. Quels sont les processus physico-chimiques ayant conduit à autant de diversité entre les

Détails

9 mai 2023

 Les nouvelles 9 mai 2023: 

1) Ecole biennale du PNP : Small bodies of the Solar System and their link with extraterrestrial samples | 4-9 Février 2024 | Les Houches, France 

2) Lancement du PEPR Origins | 22 juin 2023 | Nice & On line

3) Workshop on the Alpha Centauri System: towards new worlds | 26-30 June, 2023 | Nice, France

4) Workshop JWST Cycle 3, Formation Stellaire et Planétaire | 6-7 Juillet 2023 | Grenoble (France)

5) Summer School: Exoplanets by the Lake summer school | 31st July - 4th August 2023 | Starnberg-Munich, Germany

6) PhD position on Titan’s haze properties from Cassini/UVIS observations | Université de Reims Champagne Ardenne (GSMA)

7) Poste CPJ Université Grenoble Alpes | Dynamique des disques protoplanétaires et la formation planétaire (IPAG)

Bien cordialement,

                Thierry

La liste de diffusion du PNP a pour vocation la communication auprès de tous les chercheurs en planétologie et exoplanétologie en France. 

Pour s’inscrire ou se désinscrire, c’est ici : https://listes.services.cnrs.fr/wws/info/pnp_news.

N’hésitez pas à faire suivre cette information auprès des chercheurs/doctorantes/post-doctorants de votre laboratoire.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

1) Ecole biennale du PNP : Small bodies of the Solar System and their link with extraterrestrial samples | 4-9 Février 2024 | Les Houches, France 

https://leshouches2024.sciencesconf.org/

Le PNP est heureux de vous annoncer sa prochaine école thématique à l'École des Houches sur Small bodies of the Solar System and their link with extraterrestrial samples. Venez nombreux.

Objectives

This Winter School aims to better understand the bridge between solar system small bodies and extraterrestrial samples. Lectures will focus on solar system and small bodies formation and evolution, cosmochemistry, timescales, sample return analysis, and perspectives for this research field. Lectures and discussions will be held in English.

Please have a look at the Program section for more details.

The school is opened to permanent staffs, postdocs, and PhD students.

Date and location

4th to 9th of February 2024

Ecole de Physique des Houches, France

https://www.houches-school-physics.com
Registration (starting 17th April 2023)

Please register in the Registration section. The number of participants is limited to 70 persons. We aim for about 40 permanent staffs (including 25 speakers and SOC members) and 30 postdocs and/or PhD students. If the number of participants exceeds the capacity, we will select the participants to have a proper thematic, geographic, and gender balance.

Participants are expected to attend the full week (5 days); partial attendance is not recommended.

School fees

The price amounts to 540 € (VAT included) per person for the full week. It includes full board (excluding drinks) from Sunday dinner to Friday lunch, and coffee breaks.

The registation will have to be paid via the website AzurColloque, once the participants list is defined (details will come later).

We are currently looking for fundings to support the participations of some PhD students and postdocs.
Sponsors
 
CNRS / INSU : Programme National de Planétologie (PNP)
CNES : Centre National d'Etudes Spatiales  

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

2) Lancement du PEPR Origins | 22 juin 2023 | Nice & On line

Lancement du PEPR Origins "Des planètes à la vie - Ruptures technologiques, sociétales et épistémologiques"

En présentiel, à L'Observatoire de la Côte d'Azur, Boulevard de l'Observatoire, Nice et en distanciel (lien et formulaire d'inscription à venir).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

3) Workshop on the Alpha Centauri System: towards new worlds | 26-30 June, 2023 | Nice, France

Dates: 26-30 June 2023
Place: Hôtel Saint Paul, Nice, France
Deadline for abstract submission: 21 May, 2023.
Publication of program: 1 June 2023

Website: https://alphacen2023.sciencesconf.org/

We are pleased to announce the upcoming workshop "The Alpha Centauri System: Towards new worlds" which will take place in Nice, France between the 26 - 30 June 2023.

The Alpha Centauri system is the reference system for comparative exoplanetology and stellar physics. It comprises a Sun-like star (A), a cooler K star (B), and a red dwarf (Proxima) around which at least two Earth-like planets have been detected.  Due to its proximity and the possibility to observe it using a multitude of techniques, the components of this triple-star system are certainly the stars that are known best beyond the Sun.  The system attracts interest from many astrophysical domains, from detection and characterisation of planets, determination of accurate fundamental parameters, to a detailed characterisation of its surface.   The system is also an attractive target for many of the most modern observatories e.g. VLTI, HST, ALMA, and soon the JWST.   

The goal of this workshop is to gather experts in various fields (stellar, exoplanet, instrumentation) to share expertise to improve our knowledge of the system, and define the route for detection and characterization of other worlds similar to those in this system

The workshop will also celebrate the career of Frederic Thevenin, who has contributed significantly to the knowledge of this system over his career.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

4) Workshop JWST Cycle 3, Formation Stellaire et Planétaire | 6-7 Juillet 2023 | Grenoble (France)

With the support of ASHRA, we propose to hold a two-day workshop this summer in Grenoble, dedicated to the preparation of JWST cycle 3 observations for the French High Angular Resolution community. You can find all the information below, and register here:https://framaforms.org/atelier-jwst-cycle-3-formation-stellaire-et-planetaire-1682502309
  
The participation of junior researchers is encouraged.

Dates: July 6 and 7, 2023

Place: IPAG/Grenoble

Topics : 

• Spectroscopy
• Coronagraphy
• Scheduling
• Ground/space synergy

Summary:
This summer, the processing of cycle 1 data and the selection of cycle 2 requests from the James Webb Space Telescope will allow a first feedback, particularly useful in view of the preparations of future observations. In this context, we organize a 2-day workshop at the Institut de Planétologie et d'Astrophysique de Grenoble on July 6 and 7, 2023, in order to coordinate the efforts of the French teams for the requests of observations in cycle 3. These two days will be divided between 1) invited talks centered on the observations already carried out or in progress, the difficulties encountered and the developed or promising methodologies (ground/space synergy, modes of observation...), 2) periods of discussion and coordination on the future observational strategies, the need for simulation tools and numerical processing.

Transmis par Mickaël Bonnefoy, David Mouillet, Laurent Pueyo, and Lucie Leboulleux

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

5) Summer School: Exoplanets by the Lake summer school | 31st July - 4th August 2023 | Starnberg-Munich, Germany

Date: 31st July 2023 to 4th August 2023 (Monday to Friday, 4 nights)

Venue: _Vier Jahreszeiten Hotel_ in Starnberg (30 minutes from Munich main station by S Bahn)

Registration fee: 700 euros (includes hotel accommodation and all meals + coffee/tea breaks)

Lecturers: Prof. Matteo Brogi (Turin, Italy), Dr. Jens Hoeijmakers (Lund, Sweden)

Exoplanet topic: high-resolution spectroscopy of exoplanetary atmospheres

Event website: www.exolake.com

Description: In its wake, the pandemic has dramatically transformed the way that academia conducts its conferences, workshops and summer schools. Most academic events now offer hybrid formats, allowing for the possibility of remote participation. _Exoplanets by the Lake _is intended to be a signature summer school series that aims to reinstate an interactive, in-person summer school format among participants that is not easily achievable online. In 2023, our focus is on the use of high-resolution spectroscopy and ground-based telescopes to probe the physical and chemical properties of the atmospheres of exoplanets. This line of research is highly synergistic with space-based telescopes like the JWST, while still providing unique insights into the dynamics of atmospheres and their molecular constituents. High-resolution spectroscopy of exoplanetary atmospheres is one of the key science cases of the Extremely Large Telescope, which will come online in the next decade. The intended audience of this summer school ranges from Master students to junior postdocs. Both specialists in high-resolution spectroscopy of exoplanetary atmospheres and individuals who are curious about the topic are welcome to attend. Senior scientists who are intending to switch research directions and/or attending as active listeners are also welcome.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

6) PhD position on Titan’s haze properties from Cassini/UVIS observations | Université de Reims Champagne Ardenne (GSMA)

Photochemical hazes are ubiquitous in planetary atmospheres where they play an important role in regulating planetary climate and atmospheric evolution. Titan is one of the best examples of a hazy atmosphere with extensive observations obtained during the Cassini mission and it is often used as a paradigm for hazes in remote planetary environments. Cassini observations show that haze formation is initiated by ion chemistry at surprisingly high altitudes, in the ionosphere. The mass flux of haze embryos that sediment from the ionosphere, however, is only 10% of the total mass flux that reaches the main haze layer. This means that further mass transfer from the neutral gas phase to the haze particles occurs at altitudes of about 500-1000 km that is poorly understood. The anticipated growth can result from heterogeneous reactions on the particles surfaces but the lack of constraints on particle radius and number density, required for the validation of haze growth models, limits our understanding of these processes. The goal of this PhD research is to obtain such constraints by analyzing observations from the Cassini UltraViolet Imaging Spectrograph (UVIS) that probe Titan’s upper atmosphere, and reveal a strong scattering component attributed to the haze particles.

The project is funded by the International Research Center of the CNRS – University of Arizona collaboration, under the theme “Searching for Habitable Worlds, in the Solar System and Beyond”. The successful candidate will be based at GSMA/Reims and will work under the supervisions of Dr. HDR Panayotis Lavvas. There will be a regular interaction with collaborators in France and in the University of Arizona. The successful candidate shall be enrolled on a PhD programme of the Science du Numeric et de l’Ingénieur (SNI) doctoral school. The project starts in October 2023.

The candidate must have a degree in engineering or a Masters degree, demonstrating a strong background in physical sciences and numerical simulations. Background in astronomy / astrophysics is welcomed. The post requires a high level of communication skills, both oral and written (French and English required) to be able to interact with colleagues, present at conferences, and write articles in scientific journals. A sound knowledge of computer languages is necessary.

We are looking for a PhD fellow who will be able to become fully involved with the project, with a thirst for knowledge, a certain independence of thought and strong motivation to develop skills in data analysis and interpretation, in the field of planetary sciences. In addition, the candidate must be able to work in a team on multi-disciplinary projects.

Applications must include a detailed CV; at least two references (people who may be contacted); a cover letter of one page; a one-page résumé of the dissertation for the Masters;
grades for the Masters 1 or 2, or the engineering degree.

The closing date for sending applications is 15/06/2023.

For further details, contact Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser..

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

7) Poste CPJ Université Grenoble Alpes | Dynamique des disques protoplanétaires et la formation planétaire (IPAG)

L'Université Grenoble Alpes ouvre à l'IPAG une Chaire Professeur Junior sur la dynamique des disques protoplanétaires et la formation planétaire. Les  personnes intéressées peuvent contacter Guillaume Dubus (directeur IPAG, Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. ).

Lien vers le profil de poste : https://emploi.univ-grenoble-alpes.fr/medias/fichier/astroficheprofilcpj-uga-2023_1681463806180-pdf?ID_FICHE=1077892&INLINE=FALSE
 

Lien vers le site de dépôt des candidatures (Galaxie) : https://www.galaxie.enseignementsup-recherche.gouv.fr/ensup/cand_CPJ.htm
 
Date limite le 22 mai.

Détails

25 avril 2023

Les nouvelles du 23 avril 2023: 

1) Ecole biennale du PNP : Small bodies of the Solar System and their link with extraterrestrial samples | 4-9 Février 2024 | Les Houches, France 

2) Réunion Pôle de Données et Service "Surface Planétaire » | 17 Mai 2023 | On line 

3) IPPW 2023 | August 26th - September 1st | Marseille

4) PhD position on Interplay of haze and clouds in Titan’s atmosphere | Université de Reims Champagne Ardenne (GSMA)5) Poste d’Enseignant-Chercheur (25%/75%) contractuel en Planétologie | Université de Nantes | DL 29 Mai 2023

6) Annonce de post-doc sur la ligne de lumière DESIRS

7) Thèse, HDR, séminaires

    a) Séminaire Deep learning-based focal-plane wavefront sensing: principle, simulations, and in-lab tests | Maxime Quesnel (Université de Liège) | Thursday 27 April, 4PM

    b) Séminaire The Mars Soundscape and beyond | Baptiste Chide (LANL) | Jeudi 4 mai, 11h00

Bien cordialement,

                Thierry

La liste de diffusion du PNP a pour vocation la communication auprès de tous les chercheurs en planétologie et exoplanétologie en France. 

Pour s’inscrire ou se désinscrire, c’est ici : https://listes.services.cnrs.fr/wws/info/pnp_news.

N’hésitez pas à faire suivre cette information auprès des chercheurs/doctorantes/post-doctorants de votre laboratoire.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

1) Ecole biennale du PNP : Small bodies of the Solar System and their link with extraterrestrial samples | 4-9 Février 2024 | Les Houches, France 

https://leshouches2024.sciencesconf.org/

Le PNP est heureux de vous annoncer sa prochaine école thématique à l'École des Houches sur Small bodies of the Solar System and their link with extraterrestrial samples. Venez nombreux.

Objectives

This Winter School aims to better understand the bridge between solar system small bodies and extraterrestrial samples. Lectures will focus on solar system and small bodies formation and evolution, cosmochemistry, timescales, sample return analysis, and perspectives for this research field. Lectures and discussions will be held in English.

Please have a look at the Program section for more details.

The school is opened to permanent staffs, postdocs, and PhD students.

Date and location

4th to 9th of February 2024

Ecole de Physique des Houches, France

https://www.houches-school-physics.com

Registration (starting 17th April 2023)

Please register in the Registration section. The number of participants is limited to 70 persons. We aim for about 40 permanent staffs (including 25 speakers and SOC members) and 30 postdocs and/or PhD students. If the number of participants exceeds the capacity, we will select the participants to have a proper thematic, geographic, and gender balance.

Participants are expected to attend the full week (5 days); partial attendance is not recommended.

School fees

The price amounts to 540 € (VAT included) per person for the full week. It includes full board (excluding drinks) from Sunday dinner to Friday lunch, and coffee breaks.

The registation will have to be paid via the website AzurColloque, once the participants list is defined (details will come later).

We are currently looking for fundings to support the participations of some PhD students and postdocs.

Sponsors
 
CNRS / INSU : Programme National de Planétologie (PNP)
CNES : Centre National d'Etudes Spatiales  

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

2) Réunion Pôle de Données et Service "Surface Planétaire » | 17 Mai 2023 | On line

La prochaine réunion du pôle aura lieu le mercredi 17 Mai à 9h30 - 12h00 en visio.

Au programme :

• 30 min de présentation des actualités du pôle (Phase A, état des projets...)
• 30 min de présentation VESPA par Stéphane Erard (OBSPM) + 15 min de questions/discussions
• 30 min de présentation SSHADE par Bernard Schmitt (IPAG) + 15 min de questions/discussions

Sujet : PDSSP - SHADE-VESPA
Heure : 17 mai 2023 09:30 AM Paris

Participer à la réunion Zoom
https://cnrs.zoom.us/j/96885355334?pwd=NkpudzFnU1lQcU9jUHpscGRkZ0hHUT09

ID de réunion : 968 8535 5334
Code secret : 3L00bg

En espérant vous y voir nombreux !

Jean-Christophe Malapert, Frédéric Schmidt

https://github.com/pdssp

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

3) IPPW 2023 | August 26th - September 1st | Marseille

IPPW Community,

We are pleased to announce that the IPPW-2023 Abstract Portal is now live. Oral talks and Poster Abstracts must be submitted through the IPPW Abstract Submission Portal, which you can access via the IPPW Abstract Website.  Abstracts will be accepted beginning today, April 7th, with a deadline of May 14th. Please use the template available here(Latex version) or here (Microsoft Word version), session descriptions are available at https://ippw2023.org/session-descriptions/ and we invite both scientific and technical presentations.  Each submission allows for only one abstract (and scholarship application) submission. Authors wishing to submit multiple abstracts will have to create multiple accounts. Please do not submit duplicates of the same abstract.

Sponsorship pledges are still being accepted by the Local Organizing Committee (LOC). Please consider whether your organization can provide sponsorship. The greater the level of sponsorship for IPPW-2023, the more benefits the LOC can offer delegates (for instance, competitive registration fees and assistance for students). Once all sponsorship pledges are finalized, registration fees will be reviewed by the International Organizing Committee and published on the website, ippw2023.org.

If you have any questions about the event, please email the LOC at  Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. or the POC at Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser..

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

4) PhD position on Interplay of haze and clouds in Titan’s atmosphere | Université de Reims Champagne Ardenne (GSMA)

Titan, the largest of Saturn’s satellites, is unique among the moons of our solar system because it possesses a thick atmosphere (surface pressure of ~1.5 bar). Titan’s atmosphere is a rich organic laboratory leading to the formation of complex molecules, hazes and clouds. The Cassini-Huygens mission (2004-2017) explored Titan’s atmosphere and revealed its complexity as well as its dynamical evolution over the passing of its seasons. Hazes formed in the upper atmosphere (~1000 km) from the complex N2 -CH4 photochemistry, aggregate to fractal-type structures on their way to the surface. Hazes have a strong impact on the radiation field in the atmosphere, while they partake in the formation of clouds in the lower stratosphere (~150 km) due to the condensation of the gaseous photochemical products. Cassini observations reveal that the cloud composition can vary drastically depending on latitude and season, due to local changes in temperature and condensates. Moreover, heterogeneous processes on the surface of hazes and clouds are poorly understood, while the role of cosmic rays in cloud formation requires further attention. The goal of this thesis is to improve our understanding of haze and cloud coupling at different regions of Titan’s atmosphere, by combining detailed models of photochemistry/microphysics with input from laboratory experiments and constraints from Cassini observations. The thesis is funded in the framework of the ANR project TITARAD and will be conducted at the Groupe de Spectrométrie Moléculaire et Atmosphérique of the Université de Reims Champagne Ardenne in France, under the supervision of Panayotis Lavvas.

We seek a highly motivated candidate with an MSc degree, having a strong background in physical sciences and numerical simulations. Background in astronomy/astrophysics is welcomed. Candidates are encouraged to apply by the end of April 2023, but later applications will be reviewed until the position is filled. The start date of the thesis is flexible and can be postponed until October 2023.

For further details, contact Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.. Candidates should provide a CV and a cover letter.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

5) Poste d’Enseignant-Chercheur (25%/75%) contractuel en Planétologie | Université de Nantes | DL 29 Mai 2023

Dans le cadre de l’ERC PROMISES (Presence and Role of Organic Matter in Icy Satellites and ExtraSolar planets), le laboratoire de Planétologie et Géosciences (LPG) de Nantes recrute un Enseignant-Chercheur contractuel. L’enseignement (TD et TP) de 96 heures par an sera effectué dans les modules de géophysique, de sciences de l’univers, et de géologie dans le cursus de Licence en Sciences de la Vie et de la Terre de Nantes Université. Au niveau recherche, la personne recrutée intégrera l’équipe de recherche PROMISES. Cette équipe travaille sur le rôle et les transformations des molécules organiques dans l’évolution thermochimique des satellites de glace des planètes géantes et des exoplanètes riches en eau (water worlds). La recherche pourra porter sur des aspects expérimentaux (expériences HP en cellules à enclumes et interprétations des spectres Raman, infrarouges, spectrométrie de masse, …) ou numériques (transferts thermiques et chimiques dans des milieux diphasiques).

Le poste est pour 1 an renouvelable 2 fois au maximum. La personne recrutée devra avoir des connaissances en géophysique interne et/ou en physique appliquée aux sciences de la Terre. Des compétences sur l’aspect expérimental ou sur l’aspect numérique du projet PROMISES sont nécessaires. Autonomie et aptitude pour le travail en équipe sont des qualités nécessaires. La maitrise du Français est demandée pour l’enseignement en L1.

Le dossier, composé d’une lettre de motivation, d’un CV détaillé, de l’attestation ou copie du dernier diplôme obtenu, et le cas échéant, de tout autre document attestant de votre compétence à exercer ce poste, devra être retourné en un seul fichier pdf à : Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. avec en objet du message ‘candidature contractuel LRU’. La date limite de candidature est le 29 Mai 2023. Le poste démarre le 1 Septembre 2023.

Contacts: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. & Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

6) Annonce de post-doc sur la ligne de lumière DESIRS

A postdoctoral fellowship funded by the Agence Nationale de la Recherche (ANR) under the ZEPHIRS project is available for one year, renewable once upon mutual agreement, starting from October 2023 at Synchrotron SOLEIL (located in Saint Aubin, 25 km southwest of Paris).

The ZEPHIRS project consortium (ISMO, SOLEIL and ISM) aims at combining synchrotron- and laser-based VUV photoionization to spectroscopically characterise, detect and quantify—in real time and in-situ—reactive intermediates in complex gas-phase chemical reactions using photoelectron spectroscopy as a structural fingerprint.

The candidate will be working at the DESIRS VUV beamline of SOLEIL, and will be in charge of three main tasks:

• strong implication in the commissioning of an upgraded double imaging photoelectron photoion coincidence (i2PEPICO) spectrometer and in charge of improvements to the existing flow-tube reactor;
• internal research related to the photoelectron spectroscopy for the characterisation and identification of species of interest in astrochemical and combustion media, such as small hydrocarbon and polyoxygenated radicals, or the study of molecule–radical reactions involving polycyclic aromatic hydrocarbons;
• participation in collaborative research dealing with chemical reactions in the fields of combustion and catalysis.

The candidate must hold a PhD in experimental Chemistry, Physical Chemistry or closely related field for no more than 4 years. Knowledge of French is not mandatory, but a fluent level of spoken and written English is necessary. The candidate is expected to work at the interface of chemistry (combustion, astrochemistry, catalysis) and physics (photoionization dynamics) and disseminate the results through scientific publications and conferences. Therefore, a solid background in either gas phase molecular dynamics/spectroscopy or gas phase chemical reactivity / combustion processes is required. Hands-on experience with mass spectrometry, photoelectron spectroscopy or particle coincidence detection will be positively evaluated. Programming abilities and familiarity with quantum chemistry computer programs will also be considered.

Applications should be sent by email to Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. before the 31st of May 2023 providing a cover/motivation letter, CV and list of publications and contact details of at least two referees. Selected candidates will be interviewed online in June 2023.

Information on the team and research activities can be found in the DESIRS website.
 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

7) Thèse, HDR, séminaires
  

a) Séminaire Deep learning-based focal-plane wavefront sensing: principle, simulations, and in-lab tests | Maxime Quesnel (Université de Liège) | Thursday 27 April, 4PM

On Thursday 27 April, 4PM , we will host Maxime Quesnel (Université de Liège) for a seminar untitled : 

Deep learning-based focal-plane wavefront sensing: principle, simulations, and in-lab tests

Abstract: High-contrast imaging instruments are today primarily limited by non-common path aberrations appearing between the scientific and wavefront sensing arms. These aberrations can produce quasi-static speckles in science images that are difficult to distinguish from exoplanet signatures. With the help of recent advances in deep learning, we have implemented convolutional neural networks (CNN) to estimate pupil-plane phase aberrations from point spread functions (PSF). In this talk, I will show results with simulations obtained behind a vortex coronagraph, exploiting its properties to provide an alternative type of phase diversity with a 100% science duty cycle. I will also introduce an autoencoder-based method, that uses a deep CNN as the encoder and a differentiable simulator of the instrument as the decoder. This enforces the latent space to represent phase aberrations, and because the approach is unsupervised, it is not necessary to know the true aberrations to train the models. This is particularly promising for on-sky applications, and results on laboratory data using the Subaru/SCExAO instrument are first presented.

We will meet in the meeting room on the first floor of building 16 or on zoom. 

Best wishes, 

Johan Mazoyer 

LESIA - HRAA is inviting you to a scheduled Zoom meeting.

Topic: Seminaire HRAA: Maxime Quesnel

Time: Apr 27, 2023 03:30 PM Paris

Join Zoom Meeting

https://us02web.zoom.us/j/88287356876?pwd=RjhHQzEyUkJXY2tuSDNranVWUytqdz09

Meeting ID: 882 8735 6876

Passcode: 108790

b) Séminaire The Mars Soundscape and beyond  | Baptiste Chide  (LANL) | Jeudi 4 mai, 11h

https://us02web.zoom.us/j/81542249970?pwd=anJqbG9XWTRBaFFrVDVaUGQrck50UT09

On February 18, 2021, NASA’s Perseverance rover landed in Jezero Crater carrying the two first microphones operating on the surface of Mars: the Supercam microphone, positioned on top of the rotating rover’s mast and the EDL microphone fixed on the body of the rover. Working flawlessly since then, they provide the first characterization of Mars’ acoustic environment in the audible range and beyond, from 20 Hz to 50 kHz. Detected sounds originate from three main sources: the atmosphere (turbulence, wind), the shock-waves generated by the Supercam laser ablating rocks, and mission-induced artificial sounds such as the signal generated by the high-speed rotating blades of the Ingenuity helicopter.

After one Martian year, the Perseverance playlist features more than 12 hours of Martian sounds. In addition to provide an unprecedented short timescale characterization of the wind, temperature fluctuations, and the turbulence dissipative regime, this dataset highlights the unique sound propagation properties of the low-pressure CO2-dominated Mars atmosphere: acoustic impedance varying with the season, large intrinsic attenuation of the high frequencies, and the dispersion of the sound speed in the audible range. This presentation will review these results to date and extend them to the exploration of the acoustic environment in our Solar system.

Détails

24 avril 2023

Bonjour,